CN116817667B - Automatic cleaning device for pipelines of tubular heat exchanger - Google Patents

Abstract

The application relates to the technical field of heat exchanger pipeline cleaning, in particular to an automatic cleaning device for a tube array heat exchanger pipeline. According to the application, through the cooperation of the rotating mechanism and the cleaning mechanism, a plurality of detached heat exchanger pipelines can be cleaned at one time, the cleaning efficiency is high, in the cleaning process, a mode of cooperation of flexible brushing and rigid scraping is adopted, and the targeted and accurate acid cleaning treatment can be carried out on dirt with long scaling time and high cleaning difficulty, so that the consumption of chemical agents is reduced while the cleaning thoroughness and comprehensiveness are ensured, the unnecessary corrosion of the chemical agents on the inner walls of the pipelines is avoided, the service life of the pipelines is prolonged, and the use safety is improved.

Description

Automatic cleaning device for pipelines of tubular heat exchanger

Technical Field

The application relates to the technical field of heat exchanger pipeline cleaning, in particular to an automatic cleaning device for a tube array heat exchanger pipeline.

Background

The shell-and-tube heat exchanger is widely applied to the current industrial production, and mainly comprises a shell, a tube bundle, a tube plate, a baffle plate, a seal head and the like. Has the advantages of good heat transfer effect, large area, simple structure, etc. The problem of internal scaling can occur in the long-term use process of the pipeline of the shell and tube heat exchanger, if the pipeline is not cleaned timely, the thermal resistance of the scale deposit is higher and higher, and the heat transfer efficiency is greatly reduced.

The main mode for cleaning the tube type heat exchanger tube at present is as follows: the high-pressure washing, chemical washing, rubber ball or brush washing, wherein the high-pressure washing, rubber ball and brush washing have poor treatment effect on hard scale, the washing efficiency is low, a tube type heat exchanger comprises a plurality of pipelines, the washing consumption time is long, the chemical washing can effectively clean the hard scale, but the chemical agent used in the washing process can corrode the inner wall of the pipeline, the service life of the pipeline is shortened, the strength of the pipeline is easily reduced, and potential safety hazards exist.

Disclosure of Invention

Therefore, the application aims to provide an automatic cleaning device for a tube-in-tube heat exchanger pipeline, which solves the defects in the prior art, and comprises a base, wherein a cleaning frame is arranged at the upper end of the base, a rotating mechanism is arranged on the inner wall of the right side of the cleaning frame, and a cleaning mechanism is arranged on the rotating mechanism.

The cleaning mechanism comprises a liquid storage cylinder, the liquid storage cylinder is arranged in the middle of the rotation mechanism, a liquid storage tank is arranged in the middle of the liquid storage cylinder, a second liquid storage tank is arranged on the outer side of the liquid storage cylinder, the left end of the first liquid storage tank is communicated with a second liquid inlet pipe, the right end of the second liquid storage tank is communicated with the first liquid inlet pipe, a fixing component is uniformly arranged on the outer wall of the liquid storage cylinder along the circumferential direction of the liquid storage cylinder, the liquid storage cylinder is communicated with cleaning components uniformly distributed along the circumferential direction of the liquid storage cylinder, and the cleaning components are arranged on the rotation mechanism.

The cleaning component comprises a supporting rod, the supporting rod is movably mounted on the rotating mechanism, a first spray pipe is inserted into the left end of the supporting rod, a second spray pipe is mounted in the first spray pipe, a soft brush and a scraper are uniformly mounted on the outer wall of the first spray pipe, the soft brush and the scraper are distributed left and right alternately, a water spray hole is formed between the soft brush and the first spray pipe in a penetrating mode, a plurality of second spray holes which penetrate through the end face of the first spray pipe far away from the soft brush are formed in the scraper, one ends of the second spray holes, close to the second spray pipe, are mutually communicated, the second spray pipe is communicated with the inside of the scraper through flexible short pipes, and a liquid storage tank is communicated with the first spray pipe and a liquid storage tank is communicated with the second spray pipe through hoses.

Preferably, the rotary mechanism comprises a rotary plate, the rotary plate is rotatably arranged on the inner wall of the right side of the cleaning frame, the left side wall of the rotary plate is connected with the liquid storage cylinder, the right side wall of the rotary plate is provided with a rotary gear ring, the rotary gear ring is meshed with a driving gear rotatably arranged on the inner wall of the right side of the cleaning frame, the right end of the driving gear is connected with an output shaft of a driving motor arranged on the outer wall of the cleaning frame, a plurality of groups of sewage guide ports are formed in the left side wall of the rotary plate along the circumferential direction of the rotary plate, and the sewage guide ports are used for discharging sewage and dirt into a pipeline in the cleaning process.

Preferably, the fixed subassembly includes the connecting rod, and the fixed tube chute is installed through the connecting rod to the liquid storage section of thick bamboo outer wall, and fixed tube chute diameter and heat exchanger pipeline diameter adaptation are provided with the ball to the inside even roll of fixed tube chute to reduce frictional force.

Preferably, the supporting rod is movably arranged on the rotary plate, the outer wall of the supporting rod is sleeved with a rotating gear in a sliding manner, the supporting rod can slide left and right along the rotating gear, the rotating gear is rotationally connected with the rotary plate, and the rotating gear is meshed with a fixed gear ring fixedly arranged on the rotary plate; the outer wall of the left end of the supporting rod is provided with two water storage rings in a rotating way from left to right, the outer side of the left water storage ring is communicated with a first liquid storage tank through a hose, the outer side of the right water storage ring is communicated with a second liquid storage tank through a hose, the inner side of the left water storage ring is communicated with a first water spraying pipe, the inner side of the right water storage ring is communicated with a second water spraying pipe through a short pipe, and the water storage rings are slidably arranged in sliding grooves formed in a rotary plate.

Preferably, the water spray pipe of No. one left end demountable installation has spacing end, and spacing end is including fixed disc, and fixed disc lateral wall symmetry has seted up the expansion tank, has limit stop through expansion spring slidable mounting in the expansion tank, and limit stop left side wall is the inclined plane structure, and the distance between two limit stop left side walls is the state of gradually increasing from a left side to a right side.

Preferably, the first water spraying pipe consists of a rigid pipe and a flexible telescopic pipe, the flexible telescopic pipe is detachably arranged at the left end of the rigid pipe, and the rigid pipe consists of an upper part and a lower part which are connected through bolts so as to disassemble and assemble parts in the first water spraying pipe.

Preferably, the right end of the supporting rod is of an arc surface structure, the right end of the supporting rod is abutted against the left end of a fixing ring arranged on the inner wall of the right end of the cleaning frame, and the left side wall of the fixing ring is of a wave-shaped structure.

Preferably, the scraper passes through supporting spring sliding connection with a spray pipe, and the liquid inlet that communicates with No. two spray pipes has been seted up to the one end that the scraper is close to a spray pipe, and liquid inlet inside slidable mounting has the shutoff piece, and the shutoff piece is kept away from No. two spray pipes's one end and is installed the separation blade, and the separation blade passes through connecting spring and No. two spray pipes connection, and the separation blade is close to No. two spray pipes's terminal surface and installs the pole that supports that runs through the scraper in a sliding way, and a spray pipe inner wall is installed and is supported the cooperation piece that the pole position corresponds.

Preferably, the longitudinal section of the scraper is of an inverted L-shaped structure with an arc-shaped horizontal section, and the left end face, the right end face and one end, far away from the vertical section, of the scraper are both in a blade shape.

Preferably, a pipe opening is formed in the left side wall of the cleaning frame, a pipe sleeve with a horn-shaped structure at the left end is installed in the pipe opening, a drain outlet is formed in the base, the drain outlet is obliquely downwards arranged, and a filter screen is arranged at the upper end of the drain outlet.

According to the technical scheme, the automatic cleaning device for the tube array heat exchanger pipeline, which is designed by the application, can clean a plurality of detached heat exchanger pipelines at one time through the cooperation of the rotating mechanism and the cleaning mechanism, has high cleaning efficiency, can carry out targeted and accurate pickling treatment on the dirt with long scaling time and high cleaning difficulty by adopting a mode of matching flexible brushing and rigid scraping in the cleaning process, reduces the consumption of chemical agents while ensuring the cleaning thoroughness and comprehensiveness, also avoids unnecessary corrosion of the chemical agents on the inner wall of the pipeline, prolongs the service life of the pipeline and improves the use safety.

Drawings

The application will be further described with reference to the drawings and examples.

Fig. 1 is a schematic perspective view of an automatic cleaning device for a tube of a tube array heat exchanger.

Fig. 2 is a schematic diagram of a forward cross-sectional structure of the automatic cleaning device for the tube of the tube array heat exchanger.

Fig. 3 is a schematic side sectional view of the liquid storage barrel and the fixing assembly provided by the application.

Fig. 4 is a schematic diagram of a first side cross-sectional structure of a liquid storage barrel, a first water spray pipe and a second water spray pipe provided by the application.

Fig. 5 is a schematic diagram of a second lateral sectional structure of the liquid storage barrel, the first water spraying pipe and the second water spraying pipe provided by the application.

Fig. 6 is an enlarged view of a portion of fig. 2 a of the present application.

Fig. 7 is a partial enlarged view of the present application at B in fig. 2.

Fig. 8 is an enlarged view of a portion of the present application at C in fig. 2.

Fig. 9 is a partial enlarged view of the application at D in fig. 2.

Fig. 10 is a schematic perspective view of a doctor blade according to the present application.

Fig. 11 is a schematic perspective view of a rotating plate, a liquid storage barrel and a fixing assembly according to the present application.

Reference numerals: 1. a base; 11. a filter screen; 2. cleaning a frame; 21. a catheter sleeve; 3. a slewing mechanism; 31. a rotating plate; 32. a rotary gear ring; 33. a drive gear; 34. a driving motor; 35. a dirt guiding port; 4. a cleaning mechanism; 41. a liquid storage cylinder; 42. a first reservoir; 43. a second liquid storage tank; 44. a first liquid inlet pipe; 45. a second liquid inlet pipe; 46. a fixing assembly; 461. a connecting rod; 462. fixing the pipe groove; 47. cleaning the assembly; 471. a support rod; 472. a first water spraying pipe; 4721. a rigid tube; 4722. a flexible extension tube; 473. a second water spraying pipe; 474. a soft brush; 475. a scraper; 4751. blocking; 4752. a baffle; 4753. a supporting rod; 4754. a mating block; 476. a rotation gear; 477. fixing the gear ring; 478. a water storage ring; 48. a limiting end head; 481. a fixed disc; 482. a limit stop; 49. and a fixing ring.

Detailed Description

In order to better understand the aspects of the present application, the present application will be described in further detail with reference to the accompanying drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Referring to fig. 1 and 2, an automatic cleaning device for a tube array heat exchanger pipeline comprises a base 1, wherein a cleaning frame 2 is installed at the upper end of the base 1, a rotating mechanism 3 is installed on the inner wall of the right side of the cleaning frame 2, and a cleaning mechanism 4 is installed on the rotating mechanism 3.

Referring to fig. 2 and 11, the cleaning mechanism 4 includes a liquid storage cylinder 41, the liquid storage cylinder 41 is mounted in the middle of the rotation mechanism 3, a first liquid storage groove 42 is provided in the middle of the liquid storage cylinder 41, a second liquid storage groove 43 is provided in the outer side of the liquid storage cylinder 41, the left end of the first liquid storage groove 42 is communicated with a second liquid inlet pipe 45, the right end of the second liquid storage groove 43 is communicated with a first liquid inlet pipe 44, a fixing component 46 is uniformly mounted on the outer wall of the liquid storage cylinder 41 along the circumferential direction thereof, the liquid storage cylinder 41 is communicated with cleaning components 47 uniformly distributed along the circumferential direction thereof, and the cleaning components 47 are mounted on the rotation mechanism 3.

The first liquid inlet pipe 44 and the second liquid inlet pipe 45 are communicated with external liquid supply equipment, the first liquid storage tank 42 is used for storing clean water, the second liquid storage tank 43 is used for storing chemical agents, and the inner wall of the pipeline is cleaned through the clean water and chemical agent matching cleaning assembly 47.

Referring to fig. 1, fig. 4, fig. 5, fig. 7 and fig. 8, the cleaning assembly 47 includes a supporting rod 471, the supporting rod 471 is movably mounted on the rotating mechanism 3, a first spray pipe 472 is inserted at the left end of the supporting rod 471, a second spray pipe 473 is mounted in the first spray pipe 472, a brush 474 and a scraper 475 are uniformly mounted on the outer wall of the first spray pipe 472, the brush 474 and the scraper 475 are distributed left and right alternatively, a first spray hole is formed between the brush 474 and the first spray pipe 472 in a penetrating manner, a plurality of second spray holes are formed inside the scraper 475 in a penetrating manner, the second spray holes penetrate through the end faces of the scraper 475 away from the first spray pipe 472, one ends of the second spray holes close to the second spray pipe 473 are communicated with each other, the second spray pipe 473 is communicated with the inside of the scraper 475 through flexible short pipes, and the first liquid storage tank 42 is communicated with the first spray pipe 472 and the second liquid storage tank 43 is communicated with the second spray pipe 473 through flexible pipes.

Clean water in the first liquid storage tank 42 and chemical agents in the second liquid storage tank 43 are respectively introduced into the first water spraying pipe 472 and the second water spraying pipe 473 through external liquid supply equipment, clean water is sprayed out from the first water spraying hole, softer dirt adhered to the inner wall of the pipeline is cleaned by matching with the soft brush 474, the chemical agents are sprayed out from the second water spraying hole, stubborn dirt adhered to the inner wall of the pipeline is cleaned by matching with the scraper 475, and the thoroughness of pipeline cleaning is ensured.

Referring to fig. 2, 8 and 9, the revolving mechanism 3 includes a revolving plate 31, the revolving plate 31 is rotatably mounted on the inner wall of the right side of the cleaning frame 2, the left side wall of the revolving plate 31 is connected with a liquid storage cylinder 41, the right side wall of the revolving plate 31 is mounted with a revolving gear ring 32, the revolving gear ring 32 is meshed with a driving gear 33 rotatably mounted on the inner wall of the right side of the cleaning frame 2, the right end of the driving gear 33 is connected with an output shaft of a driving motor 34 mounted on the outer wall of the cleaning frame 2, a plurality of groups of dirt guiding ports 35 are formed on the left side wall of the revolving plate 31 along the circumferential direction thereof, and the dirt guiding ports 35 are used for discharging sewage and dirt into a pipeline in the cleaning process.

The driving gear 33 is driven to rotate by the driving motor 34, and the driving gear 33 drives the rotary plate 31 to rotate by the rotary gear ring 32 meshed with the driving gear 33, so that the cleaning mechanism 4 and the pipeline in the cleaning mechanism 4 are driven to rotate.

Referring to fig. 2 and 3, the fixing assembly 46 includes a connecting rod 461, a fixing tube slot 462 is mounted on the outer wall of the liquid storage tube 41 through the connecting rod 461, the diameter of the fixing tube slot 462 is adapted to the diameter of the heat exchanger tube, and balls are uniformly disposed in the fixing tube slot 462 in a rolling manner so as to reduce friction.

After the pipeline is inserted into the fixed pipe groove 462, the fixed pipe groove 462 can carry out wrapped limiting on the pipeline, so that the pipeline is prevented from shaking in the cleaning process or falling in the rotating process along with the slewing mechanism 3.

Referring to fig. 9, the supporting rod 471 is movably mounted on the rotating plate 31, the outer wall of the supporting rod 471 is slidably sleeved with a rotation gear 476, the supporting rod 471 can slide left and right along the rotation gear 476, the rotation gear 476 is rotationally connected with the rotating plate 31, and the rotation gear 476 is meshed with a fixed gear ring 477 fixedly mounted on the rotating plate 31.

When the supporting rod 471 rotates along with the rotating plate 31 around the axis of the rotating plate 31, the rotation gear 476 drives the supporting rod 471 to rotate around the axis of the rotation gear 476 through the engagement with the fixed gear ring 477, and the supporting rod 471 drives the first water spraying pipe 472 to rotate, so that the soft brush 474 and the scraper 475 mounted on the first water spraying pipe 472 can scrape and clean the inner wall of the pipeline.

Referring to fig. 2, 4, 5 and 8, the outer wall of the left end of the supporting rod 471 is rotatably provided with two water storage rings 478 from left to right, the water storage rings 478 are connected with the outer wall of the supporting rod 471 in a rotary sealing manner, the outer side of the left water storage ring 478 is communicated with the first liquid storage tank 42 through a hose, the outer side of the right water storage ring 478 is communicated with the second liquid storage tank 43 through a hose, the inner side of the left water storage ring 478 is communicated with the first water spraying pipe 472, the inner side of the right water storage ring 478 is communicated with the second water spraying pipe 473 through a short pipe, and the water storage ring 478 is slidably mounted in a sliding groove formed in the rotary plate 31.

When the first water spraying pipe 472 rotates around the axis, the water storage ring 478 is limited by the sliding groove and does not rotate along with the first water spraying pipe 472, the first water spraying pipe 472 and the water storage ring 478 rotate relatively, and in the relative rotation process, the hose can always convey liquid into the first water spraying pipe 472 and the second water spraying pipe 473 through the water storage ring 478.

Referring to fig. 6, the left end of the first water spraying pipe 472 is detachably provided with a limit end 48, the limit end 48 comprises a fixed disk 481, the side wall of the fixed disk 481 is symmetrically provided with a telescopic groove, a limit stop 482 is slidably mounted in the telescopic groove through a telescopic spring, the left side wall of the limit stop 482 is of an inclined structure, and the distance between the left side walls of the two limit stops 482 is gradually increased from left to right.

When the pipeline to be cleaned needs to be placed on the fixing assembly 46, the pipeline passes through the conduit sleeve 21 firstly, the right end of the pipeline extrudes the left side wall of the limit stop 482 in the rightward moving process of the pipeline, the limit stop 482 contracts inwards towards the telescopic groove so as not to obstruct the continuous movement of the pipeline, when the pipeline moves to the condition that the limit stop 482 is not extruded any more, the limit stop 482 returns to the original position under the action of the telescopic spring, at the moment, the right side wall of the limit stop 482 is clung to the left end of the pipeline, and the limit stop 482 and the slewing mechanism 3 jointly limit the pipeline leftwards and rightwards when the pipeline is axially limited through the fixing assembly 46, so that the pipeline is prevented from shaking in the cleaning process to influence the cleaning effect.

Referring to fig. 6, 7 and 8, the first water spray pipe 472 is composed of a rigid pipe 4721 and a flexible telescopic pipe 4722, the flexible telescopic pipe 4722 is detachably mounted at the left end of the rigid pipe 4721, and the rigid pipe 4721 is composed of an upper part and a lower part which are connected by bolts so as to disassemble and assemble parts in the first water spray pipe.

Referring to fig. 9, the right end of the supporting rod 471 has a cambered surface structure, the right end of the supporting rod 471 is abutted against the left end of the fixing ring 49 mounted on the inner wall of the right end of the cleaning frame 2, and the left side wall of the fixing ring 49 has a wavy structure.

In the process of driving the cleaning mechanism 4 to rotate through the rotation mechanism 3, the supporting rod 471 slides along the left side wall of the fixed ring 49, the contact position between the supporting rod 471 and the fixed ring 49 is different, the extrusion force generated by the fixed ring 49 on the supporting rod 471 is different, and the extrusion force is matched with the elastic force action of the flexible telescopic tube 4722 of the first spray pipe 472, so that the supporting rod 471 can drive the first spray pipe 472 to move in a left-right reciprocating manner, the cleaning range of the scraper 475 and the soft brush 474 is enlarged, and the cleaning comprehensiveness is improved.

Referring to fig. 7, the scraper 475 is slidably connected with the first water spraying pipe 472 through a supporting spring, a liquid inlet communicated with the second water spraying pipe 473 is formed at one end, close to the first water spraying pipe 472, of the scraper 475, a blocking block 4751 is slidably mounted in the liquid inlet, a blocking piece 4752 is mounted at one end, far away from the second water spraying pipe 473, of the blocking block 4751, the blocking piece 4752 is connected with the second water spraying pipe 473 through a connecting spring, a supporting rod 4753 which penetrates through the scraper 475 in a sliding mode is mounted at the end face, close to the second water spraying pipe 473, of the blocking piece 4752, and a matching block 4754 corresponding to the position of the supporting rod 4753 is mounted on the inner wall of the first water spraying pipe 472.

In the process of cleaning dirt on the inner wall of the pipeline through the scraper 475, the dirt which is long in scaling time, relatively high in hardness and high in cleaning difficulty is easily encountered, the dirt is difficult to clean by scraping once, the scraper 475 is contacted with the dirt, the dirt with high hardness is extruded into the first water spraying pipe 472 by the scraper 475, the scraper 475 drives the supporting rod 4753 to extrude into the first water spraying pipe 472, the supporting rod 4753 cannot continuously move along with the scraper 475 into the first water spraying pipe 472 after being contacted with the matching block 4754, the supporting rod 4753 drives the baffle 4752 to reversely move relative to the scraper 475, the blocking block 4751 is gradually pulled out from the liquid inlet, after the blocking block 4751 is completely pulled out, the second water spraying pipe 473 is communicated with the inside of the scraper 475, the chemical agent in the second water spraying pipe 473 is sprayed onto the dirt surface, the dirt is gradually softened by the chemical agent, after a period of time, the dirt softened by the chemical agent can be scraped off by the scraper 475, the chemical agent is prevented from being used in a large range while the cleaning effect is ensured, unnecessary consumption of the chemical agent is reduced, meanwhile, unnecessary corrosion of the inner wall of the pipeline is avoided, and the service life of the pipeline is prolonged.

It should be noted that, a pressure sensor may be additionally installed on the side wall of the baffle 4752 near the second water spraying pipe 473, when the baffle 4752 drives the blocking 4751 to be pulled away from the liquid inlet, so that when the pressure sensor is no longer under pressure, the pressure sensor sends a signal to the control system, the control system controls the external liquid supply device communicated with the second liquid inlet pipe 45 to convey the chemical agent into the second liquid inlet pipe 45, the second liquid inlet pipe 45 conveys the chemical agent into the second water spraying pipe 473, finally, the chemical agent is sprayed out from the second water spraying hole formed on the scraper 475, the refractory dirt is subjected to accurate pickling treatment, after the dirt is scraped, the supporting spring drives the scraper 475 to return to the original position, the supporting rod 4753 is separated from the matching block 4754, the connecting spring drives the baffle 4752 to return to the original position, the pressure sensor is extruded, and sends a signal to the control system, and the control system controls the external liquid supply device to stop conveying the chemical agent.

Referring to fig. 10, the longitudinal section of the scraper 475 is of an inverted L-shaped structure with an arc horizontal section, and the left and right end surfaces of the scraper 475 and one end of the horizontal section far away from the vertical section are in a blade shape, so that the scraper 475 can clean the inner wall of a pipeline in the process that the first water spraying pipe 472 drives the scraper 475 to reciprocate left and right and rotate circumferentially, dirt on the inner wall of the pipeline is scraped from multiple directions, the cleaning effect is effectively improved, and the possibility of dead cleaning angles is reduced.

Referring to fig. 2, a pipe opening is formed on the left side wall of the cleaning frame 2, a pipe sleeve 21 with a horn-shaped structure at the left end is installed in the pipe opening, a drain outlet is formed on the base 1, the drain outlet is obliquely downward arranged, and a filter screen 11 is arranged at the upper end of the drain outlet. Circular through holes are formed in the left side and the right side of the cleaning frame 2 and are used for enabling the first liquid inlet pipe 44 and the second liquid inlet pipe 45 to penetrate through.

Before cleaning starts, the pipeline is inserted into the fixing assembly 46 through the conduit sleeve 21 and sleeved outside the cleaning assembly 47, sewage and dirt generated in the cleaning process finally flow to the sewage outlet, the sewage is discharged from the sewage outlet, the dirt is accumulated on the filter screen 11, and a worker can clean the filter screen 11 regularly.

Referring to fig. 1-11, the overall operation of the present application is as follows: after the pipeline is limited and fixed through the fixing assembly 46 and the limiting end 48 and the rotary plate 31, the rotary plate 31 is driven to rotate through the cooperation of the driving motor 34, the driving gear 33 and the rotary gear ring 32, so that a plurality of pipelines are cleaned, meanwhile, the cleaning time is prolonged, in the rotating process of the rotary plate 31, the water spraying pipe 472 is indirectly driven to rotate through the cooperation of the rotation gear 476 and the fixing gear ring 477, the water spraying pipe 472 is driven to reciprocate left and right through the cooperation of the supporting rod 471 and the fixing ring 49, and then the soft brush 474 and the scraper 475 are matched with clean water and chemical agents to clean the inner wall of the pipeline through multidirectional movement, the cleaning thoroughness and comprehensiveness are guaranteed, and finally the cleaned pipeline is taken out from the fixing assembly 46 by pressing the limiting stop 482. In order to avoid the adhesion of cleaned dirt on the inner wall and the outer wall of the pipeline, the pipeline can be flushed by the existing flushing equipment.

The foregoing describes the automatic cleaning device for the tube bundle heat exchanger tube provided by the present application in detail, and those skilled in the art will appreciate that the present application is not limited to the above description, since the specific embodiments and application ranges can be changed according to the ideas of the embodiments of the present application.

Claims (8)

1. The automatic cleaning device for the tube-in-tube heat exchanger pipeline comprises a base (1) and is characterized in that a cleaning frame (2) is arranged at the upper end of the base (1), a rotating mechanism (3) is arranged on the inner wall of the right side of the cleaning frame (2), and a cleaning mechanism (4) is arranged on the rotating mechanism (3);

the cleaning mechanism (4) comprises a liquid storage cylinder (41), the liquid storage cylinder (41) is arranged in the middle of the rotary mechanism (3), a first liquid storage groove (42) is formed in the middle of the liquid storage cylinder (41), a second liquid storage groove (43) is formed in the outer side of the liquid storage cylinder (41), the left end of the first liquid storage groove (42) is communicated with a second liquid inlet pipe (45), the right end of the second liquid storage groove (43) is communicated with a first liquid inlet pipe (44), fixing components (46) are uniformly arranged on the outer wall of the liquid storage cylinder (41) along the circumferential direction of the liquid storage cylinder, the liquid storage cylinder (41) is communicated with cleaning components (47) uniformly distributed along the circumferential direction of the liquid storage cylinder, and the cleaning components (47) are arranged on the rotary mechanism (3);

the cleaning assembly (47) comprises a supporting rod (471), the supporting rod (471) is movably arranged on the rotating mechanism (3), a first water spraying pipe (472) is inserted into the left end of the supporting rod (471), a second water spraying pipe (473) is arranged in the first water spraying pipe (472), a soft brush (474) and a scraper (475) are uniformly arranged on the outer wall of the first water spraying pipe (472), the soft brush (474) and the scraper (475) are distributed left and right alternately, a first water spraying hole is formed between the soft brush (474) and the first water spraying pipe (472) in a penetrating way, a plurality of second water spraying holes are formed in the scraper (475) in a penetrating way, the second water spraying holes penetrate through the end faces of the first water spraying pipe (472), the end faces of the second water spraying pipes (473) are close to each other, the second water spraying pipes (473) are communicated with the inner parts of the scraper (475) through flexible short pipes, and the first water spraying grooves (42) and the second water spraying pipes (43) are communicated with the second water spraying pipes (473) through flexible hoses;

the rotary mechanism (3) comprises a rotary plate (31), the rotary plate (31) is rotatably arranged on the inner wall of the right side of the cleaning frame (2), the left side wall of the rotary plate (31) is connected with a liquid storage cylinder (41), a rotary gear ring (32) is arranged on the right side wall of the rotary plate (31), the rotary gear ring (32) is meshed with a driving gear (33) rotatably arranged on the inner wall of the right side of the cleaning frame (2), the right end of the driving gear (33) is connected with an output shaft of a driving motor (34) arranged on the outer wall of the cleaning frame (2), and a plurality of groups of dirt guiding ports (35) are formed in the left side wall of the rotary plate (31) along the circumferential direction of the rotary gear ring;

the supporting rod (471) is movably arranged on the rotary plate (31), the outer wall of the supporting rod (471) is sleeved with a rotating gear (476) in a sliding manner, the supporting rod (471) can slide left and right along the rotating gear (476), the rotating gear (476) is rotationally connected with the rotary plate (31), and the rotating gear (476) is meshed with a fixed gear ring (477) fixedly arranged on the rotary plate (31);

the outer wall of the left end of the supporting rod (471) is rotatably provided with two water storage rings (478) from left to right, the outer side of the left water storage ring (478) is communicated with a first liquid storage groove (42) through a hose, the outer side of the right water storage ring (478) is communicated with a second liquid storage groove (43) through a hose, the inner side of the left water storage ring (478) is communicated with a first water spraying pipe (472), and the inner side of the right water storage ring (478) is communicated with a second water spraying pipe (473) through a short pipe.

2. The automatic cleaning device for the tubes of the shell-and-tube heat exchanger according to claim 1, wherein the fixing assembly (46) comprises a connecting rod (461), the outer wall of the liquid storage cylinder (41) is provided with a fixing tube groove (462) through the connecting rod (461), and balls are uniformly arranged in the fixing tube groove (462) in a rolling manner.

3. The automatic cleaning device for the tube-in-tube heat exchanger pipeline according to claim 1, wherein the left end of the first water spraying tube (472) is detachably provided with a limiting end head (48), the limiting end head (48) comprises a fixed disc (481), the side wall of the fixed disc (481) is symmetrically provided with a telescopic groove, a limiting stop (482) is slidably arranged in the telescopic groove through a telescopic spring, the left side wall of the limiting stop (482) is of an inclined surface structure, and the distance between the left side walls of the two limiting stops (482) is gradually increased from left to right.

4. The automatic cleaning device for the pipelines of the shell-and-tube heat exchangers according to claim 1, wherein the first water spraying pipe (472) consists of a rigid pipe (4721) and a flexible telescopic pipe (4722), and the flexible telescopic pipe (4722) is detachably arranged at the left end of the rigid pipe (4721).

5. The automatic cleaning device for the tube-in-tube heat exchanger pipeline according to claim 4, wherein the right end of the supporting rod (471) is of a cambered surface structure, the right end of the supporting rod (471) is abutted against the left end of the fixing ring (49) arranged on the inner wall of the right end of the cleaning frame (2), and the left side wall of the fixing ring (49) is of a wave-shaped structure.

6. The automatic cleaning device for the tube-in-tube heat exchanger pipeline according to claim 1, wherein the scraper (475) is in sliding connection with the first water spraying tube (472) through a supporting spring, a liquid inlet communicated with the second water spraying tube (473) is formed in one end, close to the first water spraying tube (472), of the scraper (475), a blocking piece (4751) is arranged in the liquid inlet in a sliding mode, a blocking piece (4752) is arranged at one end, far away from the second water spraying tube (473), of the blocking piece (4751), the blocking piece (4752) is connected with the second water spraying tube (473) through a connecting spring, a supporting rod (4753) penetrating through the scraper (475) in a sliding mode is arranged on the end face, close to the second water spraying tube (473), of the first water spraying tube (472), and a matching piece (4754) corresponding to the position of the supporting rod (4753) is arranged on the inner wall of the first water spraying tube (472).

7. The automatic cleaning device for a tube-in-tube heat exchanger pipeline according to claim 1, wherein the longitudinal section of the scraper (475) is of an inverted-L-shaped structure with an arc-shaped horizontal section, and both the left and right end surfaces of the scraper (475) and one end of the horizontal section away from the vertical section are in a blade shape.

8. The automatic cleaning device for the tube-in-tube heat exchanger pipeline according to claim 1, wherein a tube guide opening is formed in the left side wall of the cleaning frame (2), a tube guide sleeve (21) with a horn-shaped structure is arranged at the left end in the tube guide opening, a sewage outlet is formed in the base (1), the sewage outlet is obliquely downwards arranged, and a filter screen (11) is arranged at the upper end of the sewage outlet.